| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Application of Optical Kerr Gate with SrTiO3 Crystal in Acquisition of Gated Spectra from a Supercontinuum |
| YAN Li-He1,2, JIA Sen1, SI Jin-Hai1**, MATSUO Shigeki2, CHEN Feng1, HOU Xun1 |
1Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Lab of Information Photonic Technique, School of Electronics & Information Engineering, Xi'an Jiaotong University, Xi'an 710049
2Department of Ecosystem Engineering, The University of Tokushima, 2-1 Minamijosanjimacho, Tokushima 770-8506, Japan |
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| Cite this article: |
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YAN Li-He, JIA Sen, SI Jin-Hai et al 2012 Chin. Phys. Lett. 29 074207 |
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Abstract We investigate the optical Kerr effect of SrTiO3 (STO) crystal, of which the nonlinear response time was measured to be less than 200 fs, while the nonlinear refractive index is estimated to be 2.16×10-15 cm2/W. Using the optical Kerr gate (OKG) technique with an STO crystal as the Kerr medium, we obtain narrow-bandwidth and symmetric gated spectra from a supercontinuum generated in distilled water by a femtosecond laser. The experimental results show superiority compared with the gated spectra obtained using OKG with CS2 as the Kerr medium, demonstrating that STO crystal is a promising OKG medium.
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Received: 19 October 2011
Published: 29 July 2012
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| PACS: |
42.65.Pc
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(Optical bistability, multistability, and switching, including local field effects)
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42.65.Re
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(Ultrafast processes; optical pulse generation and pulse compression)
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78.47.J-
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(Ultrafast spectroscopy (<1 psec))
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